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164400-28-6

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164400-28-6 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 164400-28-6 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,6,4,4,0 and 0 respectively; the second part has 2 digits, 2 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 164400-28:
(8*1)+(7*6)+(6*4)+(5*4)+(4*0)+(3*0)+(2*2)+(1*8)=106
106 % 10 = 6
So 164400-28-6 is a valid CAS Registry Number.

164400-28-6Relevant articles and documents

(1,2-Bis(diphenylphosphino)ethane)(η3-1-arylallyl)palladium tetrafluoroborates. Distribution of the positive charge density by correlation of NMR chemical shifts with Hammett substituent constants

Malet, Ramón,Moreno-Ma?as, Marcial,Parella, Teodor,Pleixats, Roser

, p. 2463 - 2469 (2008/10/09)

13C NMR differences of chemical shifts (δX - δH) of allyl carbon atoms in a series of (1,2-bis(diphenylphosphino)ethane)(η 3-1-(4-X-phenyl)allyl)palladium tetrafluoroborates, X ranging from NO2 to OMe, correlate very well (r > 0.994) with σ Hammett constants. However, 31P NMR differences of the ligand cis and trans phosphorus atoms correlate well with σ and with σ+, respectively. These data indicate that the positive charge density of the cation is localized mainly in the P-Pd-P region.

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